Oil-burner.



No. 841,597. PATENTED JAN. 15, 1907.

W. S. STEWART.

UIL BURNER.

AAPPLICATION FILED MAY 19. 190e.

UNITED STATES PATENT OFFICE.

WILLIAM S. STEWART, OF BISBEE, ARIZONA TERRITORY, ASSIGOR OF ONE-HALF TO H'. J. DAY, OF B ISBEE, ARIZONA TERRITORY.

OIL-BURNER;

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed May 19, 1906. Serial No. 817.800.

To all whom it may concern:

Be it known that I, WILLIAM S. STEWART,

a citizen of the United States, residing at Bisbee, in the county of Cochise and Territory of Arizona, have invented certain new and useful Improvements Vin Oil-Burners, of which the following is a specification. u Thisinvention relates to new and useful improvements in liquid-fuel burners; and it relates particularly'to a type of burner in which the combustion of the oils is facilitated by the admixture of steam.

In this connection the invention aims, primarily, to provide a device which shall insure a perfect combustion of the liquid fuel and'in which the oil and steam are so distributed that the latter acts as a vehicle for the former and serves as an insulation for the walls of the furnace until'the mixture of oilv and steam shall have penetrated a sufficient distance therein to come into contact with the flames. The advantages attained from this mode of use are that the steam serves'as an oil insulation for the walls of the furnace and prevents any oil from settling thereupon,

with the resultant carbonization thereof. In.

its initial passage into the furnace the steam serves as a vehicle for theoil and instead of being thoroughly mixed therewith surrounds the same; but as the'mixture after leaving 'the burner travels through the furnace the heat insures a thorough atomization of the prticles, jso that at the time of-meeting the mes a perfect combustion of the fuel 1s as- -sured without any remature carbonization thereof upon the wa ls of the furnace.

The detailed construction will appear in the courseiof the following description, in which reference is had to the accom anying drawings, formin a part-of this speci cation, like numerals deslgnating like parts throughout the several views, wherein- Figure 1 is a side elevation showing an oilburner constructed in accordance with the resent invention. Fig. 2 is a fragmentary ongitudinal' section thereof. Fig. 3 is a longitudinal section of a detached element to be hereinafter, specifically referred to, and

Figs. 4 and'-are respective front and end 5o elevations thereof.

- In the practical embodiment of m 'invention I empioy a burner A, designe for the admixture of steam' and oil and 1n communication independently with a steam-pipe' 1 and an oil-pipe 2, surrounding the same in 55 leading from avsource of steam-supply having 6o an'independent pressure, and the oilipe 2 has connection with a pipe 5, leading om a source of oil-supply having an independent pressure. The pipe 4 is joined with the pipe 5 by a branch pi e 6, which is rovided with 6 a manually-operated '.contro ng-valve 7. When the valve 7 is o ened, the pipe 6 affords communicationetween the pipes 4 and 5, so thatthe stean passes therethrough without entering vthe burner and exerts a 7o suction in the pipe'l that tendsto clean lthe same out when the burner is not in use, so as to preventv the apparatus from becoming clogged by extraneous matter.- The steam admitted through the valve 7 in its blowing- 7 5 passage through the pipe 3 tends to clean the atter positively, as will be readily understood.

The pipe 1 projects a short distance beyond the pipe Zat its'outer end and is threaded, as 8o at 8. The pipe 2 is likewise threaded at itsY extremity, as at 9. 'The pipes 1 and 2 have connection by virtue of their threaded portions 8 and 9 with correspondingly-arranged threaded recesses in the enlarged vend of a 85 burner-head 10. The burner-head 10 is of -substantial L shape in cross-section and is provided with an inclined passage 1 1, leading from the pipe 1 to the horizontal face thereof,

and with a horizontal passage 12, leading g'o from the passa e 3 of the pipe 2 to the vertical face thereo The head 10 is provided at the junction of its angularly-dis osed faces with an interfitting ca 13, suita ly secured thereon and illustrate in detail in Figs. 3, 4, 95

and 5.' The admixture of the steam and oil to the degree requisite for carrying out the functions of the invention is effected within the cap 13,` and to this end said cap is formed with a substantially wedge-shaped passage roo 14, tapering rearwardly and confronting the horizontal face of the head 10, so that said head and said cap unite to form a continuous fluid-conducting passage throughout the lineal extent of the cap 13, said passage being 1o 5 in communicationat its rear endrwith the less speedthrough the passage 3 `an passage 11. The passage 14Yis intersected at an, Ja proximately central point by an in-A olinel passage 15, formed in the cap 13 and communicating at its rear end With the passage 12.

In practical use the steam travels through the pipe 1 lat a much greater relative pressure 1 sagel2 into the. assage 15 in the cap 13, by Whiehitz con ucted into the passage 14. Inasmueh as` the oil has an independent reduced-pressure and'is not dependent for its travelupon the. suction of `,the steam, and

inasmuchsaagthe passage 14l constantly WidenstoWard. its outlet, the steam and oil therein are. .no,tv1 choked, but move freely therethroughwithout. becoming thoroughly ,intemnixedi;- Thejet of vsteam catches the oilasiit. leaves the passage 15 and conveys it through. the, burneretipl of 4'any approved farm into theV furnace. Hence it is seen that the arrangement of the parts issuch that the .stnam-.servesinitially as` avehicle for the oil untill'the` time. for its proper commingling therewithiin establishing a perfect combustio-n.. It willbe readily apparent- `that the steam .in serving as a vehicle and in being projected into the furnace in relatively greater.

quantities than theoil also serves as an 1nsulatingenvelop.to protect the Walls of the the pas,-v

upon and being carbonized.

furnace from the particles of oil settling there- While the elements herein shown and described are Well adapted to serve the purposes set forth, it is obvious that various minor changes may be made in the proportions, shape, and arrangement of the several parts Without departing from the spirit and Scope of the inventionas defined in the appended claim.

Having fully claim- In an oil-burner, the combination with an inner steam-pipe and an outer concentric oil-pipe of a burner-head formed with concentric threaded openings for the reception of said respective steam and oil pipes, said burner-head comprising a major vsec-,tion formed with a horizontal passage communieating with said oil-pipe, a flared recess eX- described my invention, I

- tending to the front edge thereof and an inclined passage leading rearwardly from said recess to said steam-pipe and a section superimposed 1on said first-named section and yformed throughout its lineal extent With a flared recess, adjacent to and coacting with said first-named flared recess to form a flared discharge-passage and formed with an inclined passage leading from a point Within said iiared recess to said horizontal passage in said first-named section.V v v In testimonywhereof I affx my signature in presence of two Witnesses.

WILLIAM' S. STEWART'. Witnesses:

FRED RILEY, J oHN F; WHITE. 

